? Weifang Dumanyuan Imp.&Exp. Co.,Ltd , was founded in November, 2012 & plays the key role of China Mingyu Holding Groups international business development function .Manufacturing & Exporting : casting products,forging products,CNC machining products,auto spare parts,mining machine,engineering machine, metallurgical equipment,Wind power and nuclear power equipment,vehicles with its spare parts , chemical products , iron and steel products .